The Effect of Tekturna on Endothelial Function and Endothelial Progenitor Cells in Patients With Early Atherosclerosis
We will study the hypothesis that long-term Tekturna treatment will improve endothelial function and the production and function of endothelial progenitor cells (EPCs) in patients with early atherosclerosis. Specifically, long-term Tekturna treatment will increase the Reactive Hyperemia Peripheral Arterial Tonometry indexes and increase the numbers and the function of circulating endothelial progenitor cells, compared to placebo, in association with a reduction in inflammation and oxidative stress.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||The Effect of Tekturna on Endothelial Function and Endothelial Progenitor Cells in Patients With Early Atherosclerosis|
- Endothelial Progenitor Cells (EPC) [ Time Frame: Baseline, 4 Months ] [ Designated as safety issue: No ]Peripheral blood mononuclear cells were stained for EPC markers (cell-surface antigens CD34/CD133/KDR) and counted by flow-cytometry.
- Reactive Hyperemia Index (RHI) [ Time Frame: Baseline, 4 Months ] [ Designated as safety issue: No ]RHI was measured by the noninvasive endothelial peripheral arterial tomography (EndoPat) test. EndoPAT results are reported as the "Endoscore" (range 0-3); a score of 1.67 and lower indicates the need for immediate medical attention; a score between 1.68 and 2 indicates a need to reduce risk factors; a score above 2.1 indicates a healthy heart.
- Systolic Blood Pressure [ Time Frame: Baseline, 4 Months ] [ Designated as safety issue: No ]
- Diastolic Blood Pressure [ Time Frame: Baseline, 4 Months ] [ Designated as safety issue: No ]
|Study Start Date:||February 2010|
|Study Completion Date:||December 2011|
|Primary Completion Date:||December 2011 (Final data collection date for primary outcome measure)|
Active Comparator: Aliskiren
150 mg Aliskiren once daily for a period of 4 months.
150 mg Aliskiren once daily for a period of 4 months
Placebo Comparator: Placebo
1 pill per day by mouth for 4 months.
1 pill per day by mouth for 4 months
Aliskiren is a direct renin-inhibitor and may have beneficial effects on the vascular endothelium, similar to other antihypertensive therapies targeting the renin-angiotensin-aldosterone system (RAAS). The current study was designed to test the hypothesis that aliskiren improves endothelial function and increases the number of endothelial progenitor cells (EPCs) in normotensive patients with early atherosclerosis.
|United States, Minnesota|
|Mayo Clinic in Rochester|
|Rochester, Minnesota, United States, 55905|
|Principal Investigator:||Amir Lerman, MD||Mayo Clinic|